Lenovo G550 - Keyboard/Mouse/Pointer Issues - PLEASE HELP Tech suppport couldn't.

I spent over an hour on the phone with Lenovo tech support last week to try to solve this issue and it is not solved. The guy had never heard of it and kept researching how to fix it. I personally have this feeling that it's a very very simple issue but I can't figure out how to correct it. I've changed mouse/pointer settings and it still isn't working. I love my new laptop in every other way but i'm getting so frustrated with it I'm ready to send it back because of the problem with the mouse/pointer. So if anyone could help me I'd appreciate it greatly.
I will be typing and out of nowhere the cursor will move to wherever the mouse is...or it will highlight everything I just typed and delete it. I've had to type much slower and keep moving the mouse but when i'm working on my projects and typing away and highlighting/editing, I get into the work and it's a pain in the rear when the cursor suddenly moves a paragraph up and I am still typing away and sometimes don't realize it until i've typed another two sentences. Hence the typing slower.
Today it deleted discussion posts I had typed up for my online classes before I had hit submit. Causing me to waste another 30 minutes trying to retype what I'd already done. I was ready to throw this laptop in the garbage.
I decided to not do that and post in this forum in the hopes that someone will be able to help me.
Thank you,
Komal

@ shelagh
try to un-install touchpad drivers,restart your computer and check if issue persists.
and/or try to flash bios update ( for bios update, read readme file first )
http://consumersupport.lenovo.com/us/en/DriversDownloads/drivers_list.aspx?CategoryID=600154

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Quote from: Bernhard on 21-September-11, 23:46:23
Inspect all your USB ports carefully for any visible damage inside the ports itself. Test if a USB device can be inserted smoothly into each one.
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1. I have tried copying the Keyboard/Trackpad/Mouse drivers to the $WinPEDriver$ directory with mixed success on a 2012 MBP.
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Insanity is hereditary, you get it from your children
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Report generated February 8, 2015 at 7:53:07 AM EST
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Click the [Click for support] links for help with non-Apple products.
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        /Library/Extensions
    [loaded]    com.sophos.kext.sav (9.2.50 - SDK 10.8) [Click for support]
    [loaded]    com.sophos.nke.swi (9.2.50 - SDK 10.8) [Click for support]
Problem System Launch Agents: ℹ️
    [killed]    com.apple.CallHistoryPluginHelper.plist
    [killed]    com.apple.CallHistorySyncHelper.plist
    [killed]    com.apple.cmfsyncagent.plist
    [killed]    com.apple.coreservices.appleid.authentication.plist
    [killed]    com.apple.EscrowSecurityAlert.plist
    [killed]    com.apple.Maps.pushdaemon.plist
    [killed]    com.apple.rcd.plist
    [killed]    com.apple.recentsd.plist
    [killed]    com.apple.SafariNotificationAgent.plist
    9 processes killed due to memory pressure
Problem System Launch Daemons: ℹ️
    [killed]    com.apple.AssetCacheLocatorService.plist
    [killed]    com.apple.awdd.plist
    [killed]    com.apple.coresymbolicationd.plist
    [killed]    com.apple.ctkd.plist
    [killed]    com.apple.emond.aslmanager.plist
    [killed]    com.apple.GSSCred.plist
    [killed]    com.apple.ifdreader.plist
    [killed]    com.apple.installd.plist
    [killed]    com.apple.nehelper.plist
    [killed]    com.apple.periodic-monthly.plist
    [killed]    com.apple.periodic-weekly.plist
    [killed]    com.apple.sandboxd.plist
    [killed]    com.apple.softwareupdate_download_service.plist
    [killed]    com.apple.tccd.system.plist
    [killed]    com.apple.wdhelper.plist
    15 processes killed due to memory pressure
Launch Agents: ℹ️
    [not loaded]    com.adobe.AAM.Updater-1.0.plist [Click for support]
    [running]    com.adobe.AdobeCreativeCloud.plist [Click for support]
    [running]    com.canon.MFManager.plist [Click for support]
    [unknown]    com.oracle.java.Java-Updater.plist [Click for support]
    [running]    com.sophos.uiserver.plist [Click for support]
Launch Daemons: ℹ️
    [loaded]    com.adobe.fpsaud.plist [Click for support]
    [loaded]    com.microsoft.office.licensing.helper.plist [Click for support]
    [unknown]    com.oracle.java.Helper-Tool.plist [Click for support]
    [running]    com.sophos.common.servicemanager.plist [Click for support]
User Launch Agents: ℹ️
    [loaded]    com.adobe.AAM.Updater-1.0.plist [Click for support]
    [loaded]    com.adobe.ARM.[...].plist [Click for support]
    [loaded]    com.divx.agent.postinstall.plist [Click for support]
    [loaded]    com.kodak.KODAK AiO Firmware Updater.plist [Click for support]
    [loaded]    com.kodak.KODAK AiO Software Updater.plist [Click for support]
    [running]    com.kodak.StatisticCollection.plist [Click for support]
User Login Items: ℹ️
    iTunesHelper    Application Hidden (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
    Dropbox    UNKNOWN (missing value)
    bomgar-scc-20140103-113305    UNKNOWN (missing value)
    KiesAgent    Application Hidden (/Applications/Kies.app/Contents/MacOS/KiesAgent.app)
    fuspredownloader    Application Hidden (/Users/[redacted]/Library/Application Support/.FUS/fuspredownloader.app)
Internet Plug-ins: ℹ️
    AmazonMP3DownloaderPlugin1017277: Version: AmazonMP3DownloaderPlugin 1.0.17 [Click for support]
    OVSHelper: Version: 1.1 [Click for support]
    Default Browser: Version: 600 - SDK 10.10
    AdobeExManDetect: Version: AdobeExManDetect 1.1.0.0 - SDK 10.7 [Click for support]
    AdobeAAMDetect: Version: AdobeAAMDetect 2.0.0.0 - SDK 10.7 [Click for support]
    AdobePDFViewerNPAPI: Version: 11.0.10 - SDK 10.6 [Click for support]
    DivXBrowserPlugin: Version: 2.2 [Click for support]
    FlashPlayer-10.6: Version: 16.0.0.305 - SDK 10.6 [Click for support]
    Flash Player: Version: 16.0.0.305 - SDK 10.6 [Click for support]
    QuickTime Plugin: Version: 7.7.3
    Silverlight: Version: 5.1.10411.0 - SDK 10.6 [Click for support]
    SharePointBrowserPlugin: Version: 14.4.7 - SDK 10.6 [Click for support]
    AdobePDFViewer: Version: 11.0.10 - SDK 10.6 [Click for support]
    CANONiMAGEGATEWAYDL: Version: 3.2.0.1 - SDK 10.6 [Click for support]
User internet Plug-ins: ℹ️
    WebEx64: Version: 1.0 - SDK 10.5 [Click for support]
    Google Earth Web Plug-in: Version: 7.1 [Click for support]
Safari Extensions: ℹ️
    Saveonmac
    iMedia Converter Deluxe
    MacVeXe
    DivX Plus Web Player HTML5 <video>
3rd Party Preference Panes: ℹ️
    DivX [Click for support]
    Flash Player [Click for support]
Time Machine: ℹ️
    Time Machine not configured!
Top Processes by CPU: ℹ️
        16%    WindowServer
        11%    SophosAutoUpdate
         8%    com.apple.WebKit.Plugin.64
         8%    Safari
         2%    SophosUIServer
Top Processes by Memory: ℹ️
    120 MB    Safari
    116 MB    SophosWebIntelligence
    43 MB    SophosScanD
    43 MB    InterCheck
    39 MB    WindowServer
Virtual Memory Information: ℹ️
    44 MB    Free RAM
    751 MB    Active RAM
    724 MB    Inactive RAM
    1.21 GB    Wired RAM
    60.34 GB    Page-ins
    819 MB    Page-outs

The minimum requirement is 2GB, but most people think 4GB is the bare minimum.
I primarily buy from Crucial, Other World Computing, or MemoryTen. As long as they have a "configurator" where you pick you exact Mac from a list and it lists all the compatible memory for that Mac, AND it has a lifetime warranty on the RAM, it should be ok. Macs are very picky about the RAM because they use it to its full capacity. If there are any faults in the modules, it will crash.
There are suggestions for sites in other parts of the world on the EveryMac website. Look down in the Section for RAM where you'll find links to their sponsors (OWC is the US-based one).
In Apple's world, there is a difference between and "Upgrade" and an "Update." Updates should generally be installed as they patch vulnerabilities and fix bugs.
Upgrades on the other hand are an entirely new Operating System (OS). A change in the OS can cause many problems with your installed software as it may not be compatible with the changes. It may rely on programming interfaces that have been removed. They should know that they will be removed as Apple publishes those facts many years prior to removing the features.
An Upgrade takes you to a major, new version of software whereas and Update just makes changes to the same major version of the software.
Yosemite was an Upgrade, not an Update.

Lenovo G550 - Keyboard/Mouse/Pointer Issues - PLEASE HELP Tech suppport couldn't.

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